Louis k johnson



(ModeL) L. K. JOHNSON.

. TYPE DISTRIBUTING MACHINE. I No. 244,721. Patented July 19,1881,

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R mwsms. g V u fizz/Lb X flfindm U ITED STATES PATENT OFFICE.

LOUIS K. JOHNSON, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE Ass GN- ME T, TO EDWARD N. nIcKERs N, TRUSTEE.

TYPE-DISTRIBUTING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 244,721, dated July 19, 188 1.

' Applicationfiled May 28,1881. (Model) To all whom it may concern Be it known that I, LoUIs K. J oHNsoN, of the city, county, and State of New York, have invented a new and useful Improvement in Type-Distributin g Machines, of which the following is a full, true, and exact description, reference beinghad to the accompanying drawings.

My apparatus is an improvement on the type distributing machine invented by Chas.

W. Dickinson, andrelates to an improvement in apparatus for withdrawing thetype from the carriers of the same.

The object of my invention is to reduce the depth of the nicks of the type, whereby they 'are automatically selected, and thereby leave them stronger, and also to increase the bear-' ing-surface which supports the drop-hook which withdraws the type from the carriers.

Myinvention can be clearly understood from the accompanying drawings, in which similar letters refer to similar parts.

Figure 1 represents the perspective elevation of my improvement, showing the hook elevated and resting upon its rest-lever U. Fig. 2 represents a side elevation of the same, showing the rest-lever thrown back and the hook dropped.

The type T are presented by'carriers A moving in the channel B to the action of the feel ers M M which are part of the reciprocating slide G, known as a feeler-slide. Motion is imparted to this slide by means of a vibratin g cross-bar, H. The slide G is supported and operated on the bed E. Whenever the corre-.

sponding type rests in the carrier in front of the feelers M M they will enter the nicks O O in said type, thereby allowing the hook Yto drop, which engages with the ejector D, and removes the type from within the clutch C.

. The 'hook Y is released by means of the pin R, which pin has attached to it the block S. The rest-lever U is pressed forward against the block S by means of a spring, X, one end- Of which is let into U, and-the other rests upon the slide G. This rest-lever U is pivoted at W. Whenever the cross-bar H is thrown forward, thereby moving the slide G by the intervention of the spring K, the nick-pins M are brought in contact with a type, T, and if they enter the nicks in said type, the pin R is forced back by coming in contact with the type, whereby the rest-lever U is thrown back and its bearing-surface removed from beneath the hook Y, and the hook is allowed to drop. Then the return movement of the bar H withdraws the type by means of the hook Y and ejector D.

The relation between the block S and the rest-lever U-is a peculiar one, since the restthe upper surface or corner of the block S,while, as R is gradually forced back by the advance of G, the point of contact between the restlever U and the block S is changed from the upper to the lower corner of the block S, there- 'by increasing the relative movement of the rest-lever U, for the reason'that the nearer the 7 5 power is to the fulcrum of a third-order lever the farther will its free extremity move for a given movement of the power. Therefore the latter portion of the movement of U will be more rapid than the beginning of its movement, supposing the slide H to move toward the block S with the same velocity throughout its traveL- I As'this apparatus was originally constructed, and as it is shown in the patents of O. W. Dickinson and Wm. A. Lorenz, Nos. 174,899, 174,900, and 174,915, a very slight dislocation of the surface of the type, against which the pin It comes in contact, would cause the restblock upon which the hook-lever rests to stop, as the slide H was advancing earlier than it ought to, and, as aconsequence, the nicks in the type were required to be made comparatively deep, so as to permit the advance rnotion of the slide H without necessarily throwin g the hook Y off of the rest-block. This difficulty resulted from the fact that the restblock stood still so soon as the pin came in contact with the type, and the extent of contact between the under side of the hook and the top of the rest-block was limited by the depth of the nicks.

The object of this improvement is to cause the rest-block to move backward when the pin coming in contact with the type is at rest, thereby permitting a large surface of contact between the under side of the hook and the top of the rest-block, so that a less amount of motion of the slide H, and consequently a less depth of nicks in the type, will be necessary.

In the accompanying drawings, if the pin R came in contact with the rest-lever U by means of a narrow horizontal edge formed on the edge of the pin R, the relative backward movement of the top of the rest-lever, as compared with the forward movement of its cen tcr W, would be determined by the position at which that thin edge made contact with the advancing face of the rest-lever. If, however, the pin It is provided with the block S, reachin g over a considerable vertical distance of the rest-lever U, then the top of that lever will recede, in respect relatively to the advance of its bottom, in a variable ratio, beginning slowly and increasingto a more rapid movement. As arranged, the first part of the retrograde motion is slow, and this is done for the purpose, among other things, of reducing the effect of the blow of the pin R upon the type. When the feelers M M enter the nicks O O the bottom of the block S will be in contact with the rest-lever near its pivot, and then the forward movement of the slide H will impart to the top of the rest-leverits maximum retrograde movement, and a very shallow nick will be suftlcient to make certain the action of the hook Y, while the arrangement secures a large supporting and wearingsurface between the top of the rest-lever U and the bottom of the hook Y, which it supports.

The blow of the pin It against the type at the instant of impact is reduced to a minimum, because the leverage is then the greatest over the resistance of the spring, and a maximum pressure of the spring only occurs after contact has been made, and it is, in consequence, not so liable to injury.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination with a type-withdrawing mechanism, substantially as described, the stationary nick-pins M and movable pin R and movable rest-lever U, whereby the rest-lever U is moved, on the entrance of the nick-pins,

into the nicks of the type by means of a movable pin, R, substantially as described.

2. The rest-lever U, in combination with an ejector-hook, Y, and a movable pin, R, con- .structed substantially as described, whereby a greaterbeari n g-snrface is obtained between the top of the rest-lever and the ejector-hook than would be the case if the pin R and rest-block were one piece.

3. The combination of the rest-lever U, pivoted at its bottom, ejector-hook Y, and movable pin R, whereby the top of the rest-lever has a greater motion imparted to it than the nickpins have in entering the nicks of the type.

4. The combination of the fixed nick-pins M, movable pin R, block S, rest-lever U, and ejector-hook Y, combined and connected substantially as described, whereby the entrance of the nick-pins into the nicks of the type gives to the rest-lever U at first a slow movement, which movement is increased by the farther entrance of the nick-pins into the nicks in the type, whereby a large bearing surface between the rest-lever U and the hook Y is obtained, and the hook is prevented from falling by accidental variation of the surface of the type.

5. The combination of the movable pin R, block S, rest-lever U, with its backing-spring X, and ejector-hook Y, substantially as described.

6. In a type-withdrawing mechanism, the combination of the ejector-hook Y, rest-lever U, movable pin R, block S, and fixed nickpins M, constructed and combined substantially as described, whereby the impact between the pin R and the type is reduced to its minimum, and the force necessary to operate the rest-lever U is applied gradually on the advance of the nick-pins into the type, not suddenly, at the first moment of impact between the movable pin R and the type.

7. In combination with a type-withdrawing mechanism, an ejector-hook supported upon a movable lever having an upper bearing-surface, and combined and connected with apparatus, substantially as described, whereby a slight variation of the surface of the type, owing to accidental foreign substances, will not drop the hook, while a farther advance of the nick-pins into the type will cause the ejectorhooks to drop, thereby withdrawing the type, substantially as described.

LOUIS K. JOHNSON.

Witnesses:

WM. S. BEAMAN, WM. J. SAWYER. 

